crap.... despite the fact that she was growing quite slowly, I still managed to break her :( 21 days, I don't know if it's worth leaving what's left. She's auto and I'm sure she'll have a baby at the end of the week
Unless you need the space I would leave her, it is early enough you will still get some flower out of her and there is always the chance it will be the best even if it is a little smaller. Best of luck.
@IndaGC, it's an automanous variety, so I can't adjust the start of its flowering, I just really hope that it won't show signs of flowering for a few more weeks :)